Redescription of <i>Lindia gravitata</i> with comments on <i>L. tecusa</i> (Rotifera: Monogononta: Lindiidae)

Smet, Willem H. De

doi:10.1017/s0025315405012658

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…Notommata glyphura is characterized by a virgate (sucking) mastax with dorsally arched rami and one major and several accessory uncus teeth whose presence is indicated in SEM preparations by oblique jugal lines dorsal to the major uncus tooth (see also Sørensen 2002). The jaws of L. tecusa bear an uncus plate with the individual teeth tightly bound together and acting as a functional unit (De Smet 2005). Itura myersi (see Pourriot 1997) is a borderline case; there is only one uncus shaft from which distally two teeth project.…”

Section: Discussionmentioning

confidence: 99%

“…8: apomorphy box 1). Dorso‐ventrally flattened rami are present in the outgroup representatives L. tecusa (see De Smet 2005) and I. myersi (see Pourriot 1997) as well, but the jaw apparatus cannot be extruded in these taxa. Dorso‐ventrally flattened rami are also present in members of the planktonic genus Asplanchna , where they can be thrust out of the mouth opening to capture prey (Koste 1978; Walsh et al.…”

Section: Discussionmentioning

confidence: 99%

“…In species of the genera Dicranophorus and Aspelta with only one uncus tooth, there is one major and one to several vestigial jugal lines in the uncus, indicating that the single‐toothed uncus common in dicranophorid rotifers possibly resulted from a reduction in the number of uncus teeth compared to the outgroup ( N. glyphura : Fig. 7e, L. tecusa : De Smet 2005; see also Markevich and Kutikova 1989 for conceivable transformation series).…”

Section: Methodsmentioning

confidence: 99%

“…Numbers () refer to characters introduced in the character description. Smet 2005). Itura myersi (see Pourriot 1997) is a borderline case; there is only one uncus shaft from which distally two teeth project.…”

Section: Monophyly Of Dicranophoridaementioning

confidence: 99%

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Phylogeny of Dicranophoridae (Rotifera: Monogononta) - a maximum parsimony analysis based on morphological characters

Riemann

Kieneke

Ahlrichs

2009

Journal of Zoological Systematics and Evolutionary Research

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This study presents the first phylogenetic analysis of Dicranophoridae (Rotifera: Monogononta), a species rich rotifer family of about 230 species currently recognized. It is based on a maximum parsimony analysis including 77 selected ingroup and three outgroup taxa and a total of 59 phylogenetically informative morphological characters. Character coding is based on personal investigation of material collected by the authors and an extensive survey of the literature. Apart from covering general body organization, character coding primarily relies on scanning electron microscopic preparations of the mastax jaw elements. Our study suggests monophyly of Dicranophoridae with a clade of Dicranophorus and Dorria as the sister taxon of all other dicranophorid species. Monophyly of Encentrum, the most species rich genus within Dicranophoridae, cannot be demonstrated. Within Dicranophoridae our study identifies the monophyletic taxa Caudosubbasifenestrata, Intramalleata, Praeuncinata and Proventriculata, each based on unambiguous character transformations evolved in their stem lineages. However, resolution within Praeuncinata and Proventriculata is very limited. Although some terminal clades within Praeuncinata and Proventriculata are recognized, basal splits remain obscure. Probably, other characters such as DNA sequence data are needed to further our understanding of phylogenetic relationships within these poorly resolved taxa.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Monophyly Of Dicranophoridaementioning

confidence: 99%

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Phylogeny of Dicranophoridae (Rotifera: Monogononta) - a maximum parsimony analysis based on morphological characters

Riemann

Kieneke

Ahlrichs

2009

Journal of Zoological Systematics and Evolutionary Research

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Postembryonic development of hard jaws (trophi) in a species belonging to theBrachionus plicatilis complex (Rotifera, Monogononta): A morphometric analysis

Fontaneto

Melone

2006

Microsc. Res. Tech.

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The presence of hard jaws (trophi), with species-specific shape and size, is a taxonomic feature of Rotifera, a group of microscopic metazoans. Since trophi are used to discriminate among species, it is important to know whether these structures change in taxonomically important ways during postembryonic development. Using both SEM and optical images, we analyzed more than 100 individuals of a single clonal lineage of a monogonont rotifer, Brachionus plicatilis, in order to describe body and trophi development after hatching. Body size, expressed as lorica width and length, was isometrically related to age of the animals only during preadult stages. Trophi size, expressed as length of the different parts, was unrelated to either age or body size. Therefore, trophi elements do not grow after hatching in B. plicatilis. Despite the dimensional invariance with age, some differences in trophi size among individuals of the same clone were recorded. No difference in left-right asymmetry of the trophi was shown; the asymmetric elements of the trophi named rami consistently had the right ramus longer than the left. This constancy is in contrast to the reported trophi asymmetries in bdelloid rotifers, in which left-right asymmetries are not constant within clonal lineages. In conclusion, we suggest that also trophi size, constant within the analyzed clone, may be used as an additional taxonomic feature to help in the discrimination of taxa within the B. plicatilis complex of cryptic species.

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Redescription of Lindia gravitata with comments on L. tecusa (Rotifera: Monogononta: Lindiidae)

Cited by 2 publications

References 7 publications

Phylogeny of Dicranophoridae (Rotifera: Monogononta) - a maximum parsimony analysis based on morphological characters

Phylogeny of Dicranophoridae (Rotifera: Monogononta) - a maximum parsimony analysis based on morphological characters

Postembryonic development of hard jaws (trophi) in a species belonging to theBrachionus plicatilis complex (Rotifera, Monogononta): A morphometric analysis

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